BT Shield Bluetooth to Serial Port Module Shield

Transcription

1 1 BT Shield 2.2 -Bluetooth to Serial Port Module Shield Overview BT shield V2.2 is a serial port Bluetooth module (with master and slave mode) breakout board, it s compatible with Arduino and IFlat-32, it can directly plug on Arduino/IFlat-32 board, use UART port for communication with Arduino/IFlat-32 or PC. Specifications Microprocessor CSR BC417 PCB size 53.3mm X 47mm X 1.6mm Indicators PWR State Power supply 5V DC IO 6 Communication Protocol UART/Bluetooth 2.0 RoHS Yes

2 2 Electrical Characteristics Specification Min Type Max Unit Power Voltage VDC Input Target Voltage = 3.3V V Voltage VH Target Voltage = 5V Input Voltage VL: V Current Consumption ma Hardware Figure 1 Top view of BT shield V2.2

3 3 UART Multiplexer (For free UART connection setting) You can use the jumper to connect the TXD and RXD pins of HC-05 to D0, D1, D4~D7 pin of Arduino. Figure 2 UART Multiplexer When using the connection as Figure 3, the BT shield connects to the ATMega328 chip on board. Figure 3 Connect the Arduino board When using the connection as Figure 4, the HC-05 connects with the FT232RL chip, and the FT232RL connect to PC by USB. Whit this configuration you can use the serial software on PC to control or configure the HC-05 module. Figure 4 Connect the UART Interface as FT232 Except the 2 configurations above, you can connect the TXD and RXD to any other pins from D4-D7, and using the software-serial library to control the HC-05 module.

4 4 Figure 5 an example for software-serial connection Mode Switch The Mode Set Switch is connected to PIO11, when it is pushed to CMD and powered on, the HC-05 enter command mode, HC-05 module can receive and response AT command in this mode. When it is pushed to DATA and powered on. The HC-05 enters data mode and will not accept AT command. States LED When power on and disconnect the port, states LED blinks 1time/2s ; when the module connect and open the serial port, states LED blinks 2times/s. AT COMMAND 1. Test command: AT - 2. Reset AT+RESET - 3. Get firmware version AT+VERSION? +VERSION:<Param> AT+VERSION?\r\n +VERSION: Param : firmware version

5 5 4. Restore default AT+ORGL - Default state: Slave mode, pin code :1234, device name: H-C ,Baud 38400bits/s. 5. Get module address AT+ADDR? +ADDR:<Param> Param: address of Bluetooth module Bluetooth address: NAP: UAP : LAP AT+ADDR?\r\n +ADDR:1234:56:abcdef 6. Set/Check module name: AT+NAME=<Param> Param: Bluetooth AT+NAME? +NAME:<Param> (/FAIL) module name (Default :HC-05) AT+NAME=HC-05\r\n set the module name to HC-05 AT+NAME=ITeadStudio\r\n AT+NAME?\r\n +NAME: ITeadStudio 7. Get the Bluetooth device name: AT+RNAME?<Param1> 1. Param1,Param 2 : +NAME:<Param2> the address of Bluetooth device (Device address 00:02:72:od:22:24,name:ITead) AT+RNAME? 0002,72,od2224\r\n +RNAME:ITead 8. Set/Check module mode:

6 6 AT+ROLE=<Param> Param: AT+ ROLE? +ROLE:<Param> 0- Slave 1-Master 2-Slave-Loop 9. Set/Check device class AT+CLASS=<Param> Param: Device Class AT+ CLASS? 1. +CLASS:<Param> 10. Set/Check GIAC (General Inquire Access Code) AT+IAC=<Param> 1. Param: GIAC (Default : 9e8b33) AT+IAC +IAC:<Param> AT+IAC=9e8b3f\r\n AT+IAC?\r\n +IAC: 9e8b3f 11. Set/Check -- Query access patterns AT+INQM=<Param>,<Pa ram2>, <Param3> 1. AT+ INQM? +INQM : <Param>,<Para m2>, <Param3> Param: 0 inquiry_mode_st andard 1 inquiry_mode_rs si Param2: Maximum number of Bluetooth devices to respond to Param3: Timeout (1-48 : 1.28s to 61.44s) AT+INQM=1,9,48\r\n AT+INQM\r\n

7 7 +INQM:1, 9, Set/Check PIN code: AT+PSWD=<Param> Param: PIN code AT+ PSWD? + PSWD :<Param> (Default 1234) 13. Set/Check serial parameter: AT+UART=<Param>, <Param2>,<Param3> AT+ UART? AT+UART=115200,1,2,\r\n AT+UART? +UART:115200,1,2 +UART=<Param>,<Par am2>, <Param3> Param1: Baud Param2: Stop bit Param3: Parity 14. Set/Check connect mode: AT+CMODE=<Param > AT+ CMODE? + CMODE:<Param> Param: 0 - connect fixed address 1 - connect any address 2 - slave-loop 15. Set/Check fixed address: AT+BIND=<Param> Param: Fixed AT+ BIND? + BIND:<Param> AT+BIND=1234,56,abcdef\r\n AT+BIND?\r\n +BIND:1234:56:abcdef address (Default 00:00:00:00:00: 00)

8 8 16. Set/Check LED I/O AT+POLAR=<Param1, <Param2> AT+ POLAR? + POLAR=<Param1>,<Pa ram2> Param1: 0- PIO8 low drive LED 1- PIO8 high drive LED Param2: 0- PIO9 low drive LED 1- PIO9 high drive LED 17. Set PIO output AT+PIO=<Param1>,<Param2> Param1: PIO number Param2: PIO level 0- low 1- high 1. PIO10 output high level AT+PI0=10,1\r\n 18. Set/Check scan parameter AT+IPSCAN=<Param1 Param1: Query >,<Param2>,<Param time interval 3>,<Param4> AT+IPSCAN? +IPSCAN:<Param1>,< Param2>,<Param3>,< Param4> AT+IPSCAN =1234,500,1200,250\r\n AT+IPSCAN? +IPSCAN:1234,500,1200,250 Param2 : Query duration Param3 : Paging interval Param4 : Call duration

9 9 19. Set/Check SHIFF parameter AT+SNIFF=<Param1>,<Param2>,<Param3 Param1: Max time Param2: Min time >,<Param4> Param3: Retry AT+ SNIFF? +SNIFF:<Param1>,<Pa ram2>,<param3>,<par am4> time Param4: Time out 20. Set/Check security mode AT+SENM=<Param1>,<Param2> AT+ SENM? 1. + SENM:<Param1>,<Par am2> Param1: 0 sec_mode0+ off 1 sec_mode1+ non_secure 2 sec_mode2_ service 3 sec_mode3_l ink 4 sec_mode_u nknown Param2: 0 hci_enc_mod e_off 1 hci_enc_mod e_pt_to_pt 2 hci_enc_mod e_pt_to_pt_and_b cast 21. Delete Authenticated Device AT+PMSAD=<Param> Param: Authenticated Device Address AT+PMSAD =1234,56,abcdef\r\n 22. Delete All Authenticated Device

10 10 AT+ RMAAD Search Authenticated Device AT+FSAD=<Param> 1. Param: address 24. Get Authenticated Device Count AT+ADCN? +ADCN:<Param> Param: Count Device Device 25. Most Recently Used Authenticated Device AT+MRAD? + MRAD:<Param> Param: Recently Authenticated Device Address 26. Get the module working state AT+ STATE? + STATE:<Param> Param: INITIALIZED READY PAIRABLE PAIRED INQUIRING CONNECTING CONNECTED DISCONNECTED NUKNOW 27. Initialize the SPP profile lib AT+INIT Inquiry Bluetooth Device AT+INQ +INQ: <Param1>, Param1:Address <Param2>, <Param3>. Param2 : Device Class Param3 : RSSI Signal strength

11 11 AT+INIT\r\n AT+IAC=9e8b33\r\n AT+CLASS=0\r\n AT+INQM=1,9,48\r\n At+INQ\r\n +INQ:2:72:D2224,3E0104,FFBC +INQ:1234:56:0,1F1F,FFC1 +INQ:1234:56:0,1F1F,FFC0 +INQ:1234:56:0,1F1F,FFC1 +INQ:2:72:D2224,3F0104,FFAD +INQ:1234:56:0,1F1F,FFBE +INQ:1234:56:0,1F1F,FFC2 +INQ:1234:56:0,1F1F,FFBE +INQ:2:72:D2224,3F0104,FFBC 28. Cancel Inquiring Bluetooth Device AT+ INQC Equipment Matching AT+PAIR=<Param1>,<Param2> 1. Param1 : Device Address Param2:Time out 30. Connect Device AT+LINK=<Param> 1. Param : Device Address AT+FSAD=1234,56,abcdef\r\n AT+LINK=1234,56,abcdef\r\n 31. Disconnect AT+DISC 1. +DISC:SUCCESS Param : Device

12 DISC:LINK_LOSS 3. +DISC:NO_SLC 4. +DISC:TIMEOUT 5. +DISC:ERROR Address 32. Energy-saving mode AT+ENSNIFF=<Param> Param : Device Address 33. Exerts Energy-saving mode AT+ EXSNIFF Param : Device =<Param> Address Application Example This is a demo that HC-05 is a master device and communicates to hc-06. Step 1. Push the mode switch to CMD Step 2. Power on, module enter command state Step 3. Using baud rate 38400, send the AT+ROLE=1\r\n to module, with \r\n means setting successes. Step 4. Send AT+CMODE=1\r\n, set HC-05 connect to any address, with \r\n means setting successes. Revision History Rev. Description Release date v1.0 Initial version